Global Patent Index - EP 1062758 A1

EP 1062758 A1 2000-12-27 - METHOD AND APPARATUS FOR SIGNAL DEGRADATION MEASUREMENT

Title (en)

METHOD AND APPARATUS FOR SIGNAL DEGRADATION MEASUREMENT

Title (de)

VERFAHREN UND VORRICHTUNG ZUR SIGNALVERSCHLECHTERUNGSMESSUNG

Title (fr)

PROCEDE ET APPAREIL DE MESURE DE LA DEGRADATION DU SIGNAL

Publication

EP 1062758 A1 (EN)

Application

EP 99907765 A

Priority

  • EP 99907765 A
  • EP 98301853 A
  • GB 9900731 W
  • GB 9805330 A

Abstract (en)

[origin: WO9946884A1] A method of measuring the degradation of a data stream owing to the influence of errors thereon is disclosed. Unlike known degradation measures, a measure calculated in accordance with the present invention takes into account the variation in the significance of an error in dependence upon the elements which are affected by it. A particular application of the method to the selection of one of a number of possible speech coding methods for use in transmitting speech across a radio link (20) from a mobile phone (10) to a base station (30) is described.

IPC 1-7 (main, further and additional classification)

H04L 1/20; H04L 1/12

IPC 8 full level (invention and additional information)

H04L 1/00 (2006.01); H04L 1/12 (2006.01); H04L 1/20 (2006.01); H04L 25/03 (2006.01)

CPC (invention and additional information)

H04L 1/0014 (2013.01); H04L 1/0009 (2013.01); H04L 1/0015 (2013.01); H04L 1/0054 (2013.01); H04L 1/007 (2013.01); H04L 1/20 (2013.01); H04L 25/03178 (2013.01)

Citation (search report)

See references of WO 9946884A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 9946884 A1 19990916; EP 1062758 A1 20001227; US 6714896 B1 20040330

INPADOC legal status


2007-01-10 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20061205

2000-12-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000821

2000-12-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB